16211765132533 has 2 divisors, whose sum is σ = 16211765132534. Its totient is φ = 16211765132532.

The previous prime is 16211765132477. The next prime is 16211765132561. The reversal of 16211765132533 is 33523156711261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9276300672804 + 6935464459729 = 3045702^2 + 2633527^2 .

It is a cyclic number.

It is not a de Polignac number, because 16211765132533 - 2¹³ = 16211765124341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16211765132933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8105882566266 + 8105882566267.

It is an arithmetic number, because the mean of its divisors is an integer number (8105882566267).

Almost surely, 2^{16211765132533} is an apocalyptic number.

It is an amenable number.

16211765132533 is a deficient number, since it is larger than the sum of its proper divisors (1).

16211765132533 is an equidigital number, since it uses as much as digits as its factorization.

16211765132533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The spelling of 16211765132533 in words is "sixteen trillion, two hundred eleven billion, seven hundred sixty-five million, one hundred thirty-two thousand, five hundred thirty-three".